Support » Fixing WordPress » Site Health error debug

  • Hello,
    We use one commercial plugin and developers are not willing to help us, therefore I am seeking help on my own. When that specific plugin is active – “Site Health Status” gives 2 errors. We suspect, that this lead to some issues with the plugin work. The errors are:

    Error 1
    The REST API request failed due to an error.
    Error: [] cURL error 28: Operation timed out after 10001 milliseconds with 0 bytes received

    Error 2
    Loopback requests are used to run scheduled events, and are also used by the built-in editors for themes and plugins to verify code stability.
    The loopback request to your site failed, this means features relying on them are not currently working as expected.
    Error: [] cURL error 28: Operation timed out after 10001 milliseconds with 0 bytes received

    This happens even if there is just this single plugin installed. And no problems, once the plugin is deactivated.

    I am seeking way to debug health checks in order to find, what might cause problems. What URL and action is called? It is strange, but with debug mode enabled, I am not getting anything logged..

    define( 'WP_DEBUG', true );
    define( 'WP_DEBUG_LOG', "/home/membership/wordpress.log" );
    define( 'WP_DEBUG_DISPLAY', false );
    define( 'SAVEQUERIES', true );

    I have seen many posts, where people say – ask your hosting provider, it’s a problem with the host. Well – we are hosting company, so we have full control over our servers. I have tried this plugin on several different servers with different config, but results are always the same. If it’s the webserver config/php/mysql to be blamed – sure, I can take it and able to fix, but at this particular moment – I don’t know, what to fix, what the problem is.

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  • Moderator Marius L. J.



    If the plugin isn’t available online, there’s not much we can do to troubleshooting it with you, but we can give some pointers on where to start looking at least.

    The most common cause of the loopback failures have been the use of sessions within plugins and/or themes, these can easily be found by searching for session_start().

    If you don’t find any, your best bet is really to start commenting out bits of code little by little to narrow down where the problem area resides.

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